Chicken Cacciatore with Soft Polenta

boneless (skinless chicken thighs, rinsed, dried and trimmed of excess fat)

salt and pepper

flour

olive oil (divided)

mushrooms (sliced)

onion (diced)

stalk celery (diced)

red pepper (diced)

large carrot (sliced)

garlic (minced)

thinly sliced sun dried tomatoes (optional)

dry white wine

can whole San Marzano tomatoes

chicken broth

dried oregano

sprigs fresh thyme (stems removed)

drained and rinsed capers

chopped fresh basil

Grated Parmesan for serving